pediatric dentistry – dental specialty that focuses on preventive care and treatment for infants, children, and adolescents, includes care for special needs patients

periapical (PA) – area at the end of a tooth root

pericoronal – area around the crown of a tooth

peri-implantitis – inflammation of the tissue surrounding a dental implant

periodontal – refers to the tissues that surround and support the teeth

periodontal disease – includes gingivitis and periodontitis, inflammation of the periodontal tissues, may include the development of periodontal pockets, bone loss, and tooth loss, can be treated but not cured